[SOLVED] Crash with QAndroidJniObject::callStaticObjectMethod

[Firefell]

Hi,

I use QAndroidJniObject::callStaticObjectMethod to get a list of contacts which is an ArrayList<String>.

My java code is :
@
public class contact extends org.qtproject.qt5.android.bindings.QtActivity {
private static contact m_instance;
private ArrayList<String> contactNameList = new ArrayList<String>();

public contact(){
    m_instance = this;
}

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

...
}

@Override
public void onDestroy()
{
    super.onDestroy();
}

public static ArrayList<String> getContacts(){
    Log.d(QtApplication.QtTAG, "Call getContacts");
    return m_instance.contactNameList;
}

}
@

my c++ code :
@
void ApplicationInfo::queryContacts()
{
qDebug("queryContacts");
QAndroidJniObject contactNameVector = QAndroidJniObject::callStaticObjectMethod("org/qtproject/example/RDVU/contact",
"getContacts",
"()Ljava/util/ArrayList;");
// Test if result is valid
if( contactNameVector.isValid() ){
jint size = contactNameVector.callMethod<jint>("size");
for (int i = 0; i < size; ++i) {
// Getting Contact name
QAndroidJniObject jContactName = contactNameVector.callObjectMethod("get", "(I)Ljava/lang/Object;", i);
QString contactName = jContactName.toString();
qDebug(contactName.toStdString().c_str());
}
}
}
@

I have this error :
D/Qt (23861): ../RDVU/core/src/applicationinfo.cpp:85 (void RDVU::ApplicationInfo::queryContacts()): queryContacts
D/Qt (23861): Call getContacts
E/dalvikvm(23861): JNI ERROR (app bug): accessed stale local reference 0x15 (index 5 in a table of size 0)
E/dalvikvm(23861): VM aborting

I don't understand why I have this error. I read the Qt notification code example to search if I have missed something (like androidextras).

I work with Android 4.4 and Qt 5.2.1.

Thank you for your help.

[s.frings74]

The method getContacts() return the instance of class "contact". But I do not see any code that creates this instance. Also, the variable m_instance is not initialized, so the function returns a random value.

[Firefell]

I have found !

I forget add the contact activity in the AndroidManifest.xml :(